Carbureter.



G. W. GUMMINGS.

GARBRETER.

APPLICATION FILED IEB. 8,1913.

Patented Feb. 23, 1915.

CHARLES W. CUMMINGS, 0F ATOLIA, CALIFORNIA, ASSIGNOR OF-ONE-HALF TO CARLN. DUNNELL, OFV ATOLIA, CALIFORNIA.

CARBURETER..

To all whom 'it may concern.: y

Be it knownvthat I, CHARLES W. *CUM MINGS, a citizen of the UnitedStates, residing at Atolia, county of San Bernardino, State ofCalifornia, have invented 4a vnew and useful Improvement in Carbureters,of

which the following is a specification.

This invention relates tocarbureters and particularly to carbureters forvaporizing fuels of a heavy grade, or fuels which do not vaporizereadily under ordinary temper- -ature,.and the principal object is toprovide the carbureter supply withl a plurality of passages which areadapted to be heated by contacting with the heated fluids exhausting orused by the motor.

It is also an object to provide a carbureter of which both the intakeand exit from the mixing chamber are extensions of passages adapted tobe heated and surrounded by a casing adapted to confine the heatingmedium.

It is a further object to provide a carbureter in which the auxiliaryair intake also controls the entrance thereto of a vaporizing fluid notcommonly used as a fuel.

In the drawings accompanying this specification, Figure 1 is alongitudinal vertical section through the two passages carried throughthe heating chamber and the attached parts. Fig. 2 is an end view of thecarbureter, viewed from the l'side having the auxiliary fluid inlet.Fig. 3 is a planview of the carbureter, the intake manifold to which itis secured being shown in section. Fig. 4 is an enlarged detail sectionof the auxiliary fluid inlet with its controlling valve.

vIn the drawings, numerals are used to designate the same portions, 7designating the hollow body through which are carried the plurality oflongitudinal disposed passages formed by suitable walls cast integrallywith the body l7, which is of general rectangular-form, the upper face 8of vwhich is adapted to'be secured to the intake manifold 9 of anexplosive or interna-l combustion engine by suitable bolts 10, thismanifold registerin with the upper en'd of the passage 11, w ich iscarried to the lower wall or bottom of the body 7, and vprovided with aiiange 12, to which is secured the flange of the mixing chamber 14, of astand-v ard type of casting., to whichis secured the l loatchamber 15,provided with a fuel inlet Specicationof Letters Patent.

Patented Feb. 23, 19115.

Application led February 8, 1913. Serial No. 747,085.

16 and the air inlet 17 directly connected to the mixing chamber. Theupper or open portion of the air inlet 17 is connected to the plug '18secured in the lower portion of the extension 20. An air supply passage19 is formed also integrally with body 7, having a dependent sectionwhich connects with-an extension from the mixing chamber ltat the point21, this portion being shown as integral with the common type of castingpreviously mentioned, the lower opening found connected therewith beingclosed by the screw fitted plug 18.

The upper end of the passage 19 opens in the side wall oppositelydisposedto that nearest the passage 11 and preferably opens outwardforming a lateral extension 22, provided with threaded apertures in theupper and lower faces of this extension, and a lateral direct inlet 41,the upper opening'being closed by a suitable plug 23, against which thespring 241. on the valve' rests.

The lower orifice is preferably closed by .the annular lring or bell 25,.therupper edge of which is provided with a valve seat 26 on which reststhe valve 27, thebevel face being shown as forming the valve seat. Thisauxiliary air valve is provided with av Valve Astern 28, which issuitably mounted so that surrounding walls of. the body 7 and the Isimilar walls forming the various passages described, is had through aninlet opening 32 which is preferably of such size as to have the exhaustpipe '33 from the motor connected therewith and the exit therefrom beingin the oppositelydisposed lend-wall and preferably on alower level,isthe opening 34, .to which the extension of the exhaust pipe 35 issecured in any well-known manner.

lln the operation of this carbureter, in starting, a lighter fuel thanthat for which it is primarily adapted to be used is introduced, asgasolene, through the fuel intake 16 from a source of gasolene supply,and the engine started on this fuel, it being eustomary to run theengine slow during this preliminary Warming-up until the Walls of thepassages are sufficiently heated by the exhaust passing through or thehot Water used as it makes its exit from the hot cylinders, when, by theuse of a three-Way valve placed in-'fuel line on the dash-board, notshown, the fuel is shifted to a heavier gravity, which requires agreater heat to vaporize and which heat is absorbed by the vmixture ofthe latter with heated air brought in through the air intakes and alsoheated in its passage from the mixing chamber to the engine intake. Whenthe speed becomes such that more air is desired and the throttling soregulated that the auxiliary air valve 27 is lifted to .admit theauxiliary air, Water heated in its How through the heated jackets of theengine or from any other source, is admitted lat the same time by theuncovering of the vvalve seat, and is distributed and vaporized andcarried into the cylinders to vincrease the efficiency of theexpansionof the explosive charge. l

What I claim is:

1. A carbureter comprising a hollow body having an inlet and outlet,adapted to be connected to a-sourcel of heated fluid,and having aplurality of Walled passages therethrough, one of said passages havingaplurality of inletsa valve to control one of said air inlets in saidpassage, a fuel mixing chamber connected to the other end of saidpassage, anda source of fuel supply having an inlet into said mixingchamber, said mixing chamber being connected to another of said passagesin said body.

2. A carbureter, comprising ahollow body having a plurality of Walledpassages therethrough, forming inlet and outlet passages, a pressurecontrolled valve adapted to admit air to one of said passages, a valveseat for said valve, means to introduce an auxiliary fluid to said valveseat, a mixing chamber, and a fuel inlet, the exit of the mixture formedbeing controlled through the other of said passages.

3. A carbureter, comprising a hollow body having an inlet and outlet,adapted to be connected to a source of heated Huid, and having aplurality of Walled passages Itherethrough, one of said passages havingan inlet, a valve to control said inlet, a fuel mixing chamber connectedto the other end of said passage, and a source of fuel supply having aninlet into said mixing chamber, said mixing. chamber being connected toanother of said passa es in said body.

In Witness thatI claim the foregoing I have hereunto subscribed my namethis 22nd day of January, 1913.

CHAS. W. CUMMINGS.

